EP 1270680 A2 20030102 - Finely divided pigments and coloring compositions
Title (en)
Finely divided pigments and coloring compositions
Title (de)
Feinverteilte Pigmente sowie Färbezusammensetzungen
Title (fr)
Pigments finement divisés et compositions colorantes
Publication
Application
Priority
JP 2001196893 A 20010628
Abstract (en)
A finely divided pigment is formed of an aggregate of primary particles. A number of primary particles of not greater than 0.1 mu m in particle size is at least 95% of an entire number of the primary particles, and a number of primary particles of greater than 0.1 mu m in particle size is at most 5% of the entire number of the primary particles. The finely divided pigment can be produced by grinding a parent pigment (pre-division pigment) together with a water-soluble inorganic salt and a water-soluble organic solvent in a grinding machine at a temperature of from 30 to 90 DEG C for 2 to 6 hours under a load, and then removing the water-soluble inorganic salt and the water-soluble organic solvent. A coloring composition comprises a dispersing medium and the finely divided pigment dispersed in the dispersing medium. The coloring composition is, for example, an image recording agent for the ink-jet recording system, an image recording agent for the electronic printing or electrostatic recording system, or a coloring agent for forming color filter pixels.
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); C09B 1/467 (2006.01); C09B 19/02 (2006.01); C09B 29/14 (2006.01); C09B 29/33 (2006.01); C09B 33/153 (2006.01); C09B 35/035 (2006.01); C09B 47/08 (2006.01); C09B 47/10 (2006.01); C09B 48/00 (2006.01); C09B 57/00 (2006.01); C09B 57/04 (2006.01); C09B 67/00 (2006.01); C09B 67/04 (2006.01); C09C 3/00 (2006.01); C09D 11/00 (2006.01); C09D 11/322 (2014.01); C09D 201/00 (2006.01); D01F 1/04 (2006.01); D01F 6/92 (2006.01); D06P 1/16 (2006.01); D06P 3/60 (2006.01); G02B 5/20 (2006.01)
CPC (source: EP KR US)
C09B 67/0022 (2013.01 - EP US); C09C 3/00 (2013.01 - KR); C09D 11/322 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE LI
DOCDB simple family (publication)
EP 1270680 A2 20030102; EP 1270680 A3 20031029; EP 1270680 B1 20110928; EP 1270680 B2 20160413; CN 1262609 C 20060705; CN 1394917 A 20030205; JP 2003089756 A 20030328; JP 4234355 B2 20090304; KR 100615805 B1 20060825; KR 20030003036 A 20030109; TW I303265 B 20081121; US 2003084820 A1 20030508; US 6726762 B2 20040427
DOCDB simple family (application)
EP 02014369 A 20020627; CN 02127562 A 20020628; JP 2002138613 A 20020514; KR 20020036243 A 20020627; TW 91113812 A 20020624; US 18002002 A 20020627